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Old 07-12-2010, 11:24 PM
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Converting Pontiac 400 to Adjustable rockers

Anyone know what is takes to convert a pontiac 400 to adjustable rockers. I have 6X heads with screw in rocker studs. Do I have to change the rocker studs to use polylocks?

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Old 07-13-2010, 01:19 AM
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Quote:
Originally Posted by 68Birdman2
Anyone know what is takes to convert a pontiac 400 to adjustable rockers. I have 6X heads with screw in rocker studs. Do I have to change the rocker studs to use polylocks?
There are polylocks made for either the 3/8 bottleneck studs or the straight 7/16 studs.
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Old 07-13-2010, 08:27 AM
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Go Big Chevy. Get BBC studs, rocker balls and lock nuts and replace your Pontiac parts accordingly. You can use 7/16 polylocks if they will clear your valve covers.
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Old 07-13-2010, 08:46 AM
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Quote:
Originally Posted by 68Birdman2
Anyone know what is takes to convert a pontiac 400 to adjustable rockers. I have 6X heads with screw in rocker studs. Do I have to change the rocker studs to use polylocks?
You should use straight studs, not the bottleneck studs if you want to have the better set-up. Use the BN studs if you're running a stock cam, but a bigger cam should use the stiffer studs, IMO.
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Old 07-21-2010, 09:33 AM
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Thanks for the info gents. I ended up using BBC studs and lock nuts. I tried polylocks but the studs were too long and when I screwed the polylock nut on the threads protruded out the top.
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Old 07-21-2010, 09:38 AM
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how rip out the hyd. cam and install a solid flat tappet....
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